| What it does | Date, deadline and time calculators with visible assumptions and sources
| Free financial calculators for loans, investments, savings and unit conversion
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| Stage | Not given
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| Founded | Not given
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| Based in | US
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - 184 calculators across 53 categories
- Shows counting rules and assumptions with each result
- Local-first processing with no data sent to servers
- Holiday and weekend calendar selection
- Business day counting
- Date arithmetic (add or subtract days, weeks, months, years)
- Sleep cycle planner with NIH-based 80-100 minute cycles
- Time zone conversion with DST handling
- Save results as images or add to calendar
- Schengen visa 90/180 day rolling window auditing
| - Year-by-year schedule tables for long-term projections
- Chart.js visualizations to understand trends
- AI-generated insights and actionable suggestions
- Pre-filled example inputs for instant results
- 50+ calculators covering investing, loans, savings and business
- Mobile-friendly interface with compact navigation
- Lightweight site designed for speed
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| What makes it different | - Shows the source and counting rule beside every answer
- No sign-up or account required to use any calculator
- All inputs stay in your browser for privacy
- Comprehensive coverage across 53 life and work categories
- Higher-risk calculators include prompts to verify with professionals
| - No paywalls, sign-ups or personal information required
- Uses standard financial formulas consistent with professional institutions
- Clear results with plain-language insights and visual breakdowns
- Unified toolkit instead of jumping across disconnected tools
- Decision-grade outputs with key metrics and detailed breakdowns
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | 11 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 4 |
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| Citation Flow (Majestic) | 0 | 23 |
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| Referring domains (Majestic) | 0 | 15 |
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CalcSpan
TheCalculatorWorld